Numerical simulation of information recovery in quantum computers

Details Numerical simulation of information recovery in quantum computers Numerical simulation of information recovery in quantum computers

2002-07-11

arxiv.org/abs/quant-ph/0207068v1

Physics

Quantum Physics

38 pages, Figures included. Accepted in Phys. Rev. A, 2002

Scientific paper

10.1103/PhysRevA.66.022302

Decoherence is the main problem to be solved before quantum computers can be built. To control decoherence, it is possible to use error correction methods, but these methods are themselves noisy quantum computation processes. In this work we study the ability of Steane's and Shor's fault-tolerant recovering methods, as well a modification of Steane's ancilla network, to correct errors in qubits. We test a way to measure correctly ancilla's fidelity for these methods, and state the possibility of carrying out an effective error correction through a noisy quantum channel, even using noisy error correction methods.

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